CEA 4001 - Choice of water supply

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7.6.1 General
Use
the test facility specified in clause 7.4.
Test each supply to the installation independently with all other supplies isolated.
7.6.2 Storage pump and pressure tank supplies
Fully open the stop valves controlling the flow from the supply to the installation. Open the
installation drain and test valve fully and check that pump(s) if fitted start automatically. Check that
the flow is as specified in clause 6.3 and that recorded during the commissioning test. Record the
supply pressure measured on the C gauge. C ompare this with the appropriate value specified in clause
6.3 and the value recorded during the commissioning test.
7.6.3 Town main, booster pump, elevated private reservoir and gravity tank supplies
Fully open the stop valves controlling the flow from the supply to the installation. Open the drain and test
valve and check that the pump(s), if installed, have started automatically. Manipulate the drain and test
valve to give the appropriate flow specified in clause 6. When the flow is steady record the supply
pressure measured on the C gauge. Compare this with the appropriate value specified in clause 6
and the value recorded during the commissioning test.
7.7 Water contamination protection
Where a water contamination problem arises, consideration shall be given in accordance with
national regulation and/or the CEA recommendations given in the document entitled « Recommendations
for the Fire Protection of Stores Containing Hazardous Substances ».
T
Table 9: Connections for water for other services in low rise systems
Water supply type
Acceptable number, size and purpose of connection(s)
Town main. Main and supply pipe not less than
100mm
one, not more than 25mm diameter, for non-industrial
use
Town main. Main and supply pipe not less than
1
50mm
one, not more than 40mm diameter, for non-industrial
use or
one,
not more than 50mm diameter, for fire hose ree
ls,
to
which may be made a further connection (close to
the
first connection, and fitted with a stop valve close
to
the
feed end) not more than
40m
m, for non-industrial use.
Elevated private reservoir, gravity tank or
automatic
pump
one, not more than 50mm, for fire hose reels.
8 Choice of water supply
8.1 General
This chapter describes the various water supplies and combinations. National authorities shall determine the
acceptabilities
of these in respect of the hazard classifications and sprinkler installation.